초록 ▼

A liquid sprayer has a tank for storing liquid, a boom supporting spraying nozzles, and a pump and liquid control system for supplying liquid under pressure to the spraying nozzle in a manner that maintains substantially uniform liquid dispensing density independent of variations in the ground speed

A liquid sprayer has a tank for storing liquid, a boom supporting spraying nozzles, and a pump and liquid control system for supplying liquid under pressure to the spraying nozzle in a manner that maintains substantially uniform liquid dispensing density independent of variations in the ground speed of the sprayer. A ground speed sensor, a liquid pressure sensor, and a liquid flow meter sends signals to a controller to regulate a valve that controls the rate of flow of liquid to the spraying nozzles.

대표청구항 ▼

A method of dispensing liquid from a plurality of spray nozzles of a transportable liquid dispensing device over an area of ground at a uniform density independent of the ground speed of the dispensing device, the nozzles each having oonditions of operability and inoperability, comprising the steps

A method of dispensing liquid from a plurality of spray nozzles of a transportable liquid dispensing device over an area of ground at a uniform density independent of the ground speed of the dispensing device, the nozzles each having oonditions of operability and inoperability, comprising the steps of (a) measuring the ground speed of the transportable dispensing device and generating a first signal in accordance with the ground speed; (b) entering at least one flow rate parameter into a microprocessor-based control device to provide a given flow rate of liquid to the dispensing device; (c) measuring the actual liquid flow rate within the dispensing device and providing a second signal in accordance with the measured flow rate; (d) measuring the liquid pressure within the dispensing device and providing a third signal in accordance with the measured pressure; (e) entering said first, second, and third signals into the control device; (f) calculating a control signal in accordance with said first, second, and third signals and said flow rate parameter; and (g) controlling the flow of liquid from the nozzles in the operable condition to provide a constant uniform liquid density over the dispensing area independent of the ground speed of and the pressure within the dispensing device.